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  4. CVE 2026 116167 siyuan 290 before 387 xss via check auth to
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Back to active CVEs
High · CVSS 7.6CVE-2026-116167

SiYuan 2.9.0 before 3.8.7 XSS via check-auth to ParameterCVE-2026-116167

Answer in brief

CVE-2026-116167 records a High severity (CVSS 7.6) vulnerability in SiYuan 2.9.0 before 3.8.7 XSS via check-auth to Parameter. The current sources do not mark it as known exploited. The current feed maps siyuan-note/siyuan (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 25, 2026Updated Oct 25, 2026Source checked Oct 25, 2026First seen by HOL Oct 25, 2026Material review Oct 25, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.6
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps siyuan-note/siyuan (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
siyuan-note/siyuangeneric>=2.9.0 <3.8.73.8.7

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for siyuan-note/siyuan.
  2. 2Review the reported fix. Update siyuan-note/siyuan to 3.8.7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 25, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

SiYuan from 2.9.0 before 3.8.7 contains a cross-site scripting vulnerability in the unauthenticated /check-auth page that assigns the to parameter to window.location.href without scheme validation. Attackers can send a crafted link with a javascript: URI that executes after victim login, invoking kernel APIs to read or modify workspace content and settings.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • SiYuan 3.6.0 before 3.8.7 Cleartext Transmission via Unenforced networkServeTLS SettingSame siyuan-note/siyuan package
  • SiYuan before v3.8.7 Path Traversal Local File Read via MCP Asset ToolSame siyuan-note/siyuan package
  • SiYuan 2.10.0 before 3.8.7 Stored XSS via KaTeX \href in Math BlocksSame siyuan-note/siyuan package
  • SiYuan before v3.8.7 SQL Injection via History Search op and querySame siyuan-note/siyuan package
  • SiYuan 3.5.4 before 3.8.7 Sensitive Path Bypass via Windows Extended-Length PrefixSame siyuan-note/siyuan package
  • YesWiki before 4.7.0 Stored XSS via ImageField SVG UploadAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 25, 2026
References
2 linked sources
Open source record